JP4101977B2 - Method and apparatus for disassembling wound core transformer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of disassembling a wound core transformer for disassembling a wound core transformer for recycling, and a wound core transformer disassembling apparatus used for implementing the disassembling method.
[0002]
[Prior art]
Conventionally, when recycling an oil-filled wound core transformer, after removing the transformer body from the tank, the transformer is placed in an incinerator to incinerate the insulator and insulating oil, and the remaining coil conductor and The iron core was collected as a valuable resource.
[0003]
[Problems to be solved by the invention]
If the transformer is incinerated when the oil-filled transformer is recycled, a toxic gas is generated from the insulating oil and pollutes the atmosphere, which is not preferable. In order to recycle the transformer without burning it, it is necessary to perform a cleaning operation to remove the insulating oil from the transformer.
[0004]
Since the oil-filled transformer is in a state in which the insulating oil has penetrated into the inside thereof, the insulating oil cannot be completely removed even if the transformer is washed as it is. In order to completely remove the insulating oil from the wound core transformer, it is necessary to perform a disassembling work for separating the wound core and the coil, and to individually clean the wound core and the coil.
[0005]
Further, in order to completely remove the insulating oil that has penetrated into the wound core, it is necessary to disassemble the wound core separated from the coil into individual steel strips and then wash each steel strip.
[0006]
Therefore, in order to recycle the transformer, it is necessary to perform the work of disassembling the transformer. However, if the dismantling of the transformer is performed manually, the operator is contaminated by the insulating oil, which is not preferable. . In particular, when PCB is included in the insulating oil, the transformer cannot be dismantled manually, so transformers in the era when insulating oil containing PCB was used are not recycled. It is currently stored in large quantities.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to provide a method for disassembling a wound core transformer that can continuously perform the disassembling work for separating the wound core and the coil constituting the wound core transformer without using human hands. An object of the present invention is to provide a wound core transformer dismantling device used for carrying out the disassembling method.
[0008]
Another object of the present invention is to perform a dismantling operation for separating a wound core and a coil constituting a wound core transformer and a task for disassembling the separated winding core into individual steel strips without using human hands. An object of the present invention is to provide a wound core transformer disassembly method and a wound core transformer disassembly device used for carrying out the disassembly method.
[0009]
[Means for Solving the Problems]
The method for disassembling a wound core transformer according to the present invention comprises a laminate of steel strips, and has a pair of leg portions and a pair of yoke portions that respectively connect one end side and the other end side of both leg portions, Dismantle a wound core transformer having a wound core provided with a joint for joining both ends of the laminate to one yoke part, and a pair of coils wound around the legs of the pair of wound cores. A method is characterized in that the following steps (1) to (3) are performed.
[0010]
(1) Inserting a wedge between a pair of coils and displacing both coils to separate the one yoke part of the wound iron core at the joint, and the one yoke part is the first. The step of separating the yoke part that separates into the second yoke half and the second yoke half.
[0011]
(2) A mold is applied to each of the first and second yoke halves constituting one yoke part of the wound core to correct the bending of each yoke half. The yoke section straightening process.
[0012]
(3) A coil core separation step of separating the coil and the wound core by relatively displacing the coil and the wound core whose curvature of each yoke half is corrected in the axial direction of the coil. The yoke portion correction step may be performed with the wedge inserted between the pair of coils, or may be performed with the wedge removed from between the pair of coils.
[0013]
As described above, when a wedge is inserted between a pair of coils of a wound core transformer and the coils are displaced in the direction of separating the coils, one yoke of the wound core is touched without the operator touching the transformer. The one yoke part can be separated into a first yoke half and a second yoke half by easily separating the parts at the joint.
[0014]
Since the first and second yoke halves are in a greatly curved state, it is difficult to separate the wound core from the coil as it is, but as described above, the first and second yoke halves and When the winding iron core and the coil are displaced relative to each other in the axial direction of the coil while the bending of each yoke half is corrected by applying a mold to each of the yoke half of each of the two yoke halves, The coil and the wound iron core can be easily separated without touching.
[0015]
Thus, according to the present invention, since the transformer can be disassembled without touching the wound core transformer, insulating oil containing harmful substances such as PCB is attached to the wound core transformer. The transformer can be safely dismantled even if it is.
[0016]
In the disassembling method of the present invention, it is preferable to further perform the following step (4).
[0017]
(4) A wound core disassembling step of disassembling the wound iron core by sequentially separating and carrying out the steel strip constituting the wound iron core separated from the coil from the outer peripheral side of the wound iron core.
[0018]
As described above, when the steel strips constituting the wound core are separated sequentially from the outer peripheral side and the wound core is disassembled, each steel strip can be cleaned individually, so the insulating oil adhering to the wound core is removed. It can be completely removed.
[0019]
The yoke part straightening step includes a process of inserting a straightening die between the first and second yoke halves of the wound core, and the first and second yoke halves of the wound core from the outside. A process of correcting the bending of the first and second yoke halves by pressing the pressing presser mold and pressing the first and second yoke halves against the correcting mold with the presser mold. And can be configured.
[0020]
In the above-described wound iron core decomposition step, the steel strips constituting the wound iron core are adsorbed one by one and displaced in the direction of separating from the other steel strips in the stacked state, and the separated steel strips are laminated. It can carry out by repeating the process of displacing in the direction pulled apart from the other steel strip in the state made.
[0021]
The wound core transformer dismantling apparatus of the present invention that implements the disassembling method is preferably constituted by the following elements (a) to (h).
[0022]
(A) a transformer holding surface for holding a wound core transformer to be disassembled in a state where the laminated surface of the wound core is substantially horizontal, and the other of the winding cores of the transformer held on the transformer holding surface A workbench provided with a transformer positioning fixing part on one end side having a pair of fixing blocks arranged so as to face each other in a direction perpendicular to the axial direction of the pair of coils with a yoke part in between.
[0023]
(B) A transformer supply device that supplies a wound core transformer to be disassembled to one end of the workbench.
[0024]
(C) The wound iron core transformer supplied to one end of the work table by the transformer supply device is advanced to the fixed block side, and the other yoke part of the wound iron core of the transformer is interposed between the pair of fixed blocks. A transformer positioning device that inserts and makes the ends of a pair of coils abut against a pair of fixed blocks to position and fix a wound core transformer to be disassembled to a transformer positioning fixing portion.
[0025]
(D) Between the first position set above the pair of coils of the transformer positioned and fixed to the transformer positioning fixing portion and the second position where the coil is inserted between the pair of coils. And a wedge drive mechanism for displacing the wedge between the first position and the second position, and displacing the wedge to the second position, One yoke part of the wound core of the transformer positioned and fixed to the positioning fixing part by being inserted between the coils is cut off at the joint part, and the one yoke part is separated from the first yoke half and the second yoke part. Winding iron core joint separation device that separates into the yoke half.
[0026]
(E) The first and second wound core transformers arranged in the transformer positioning and fixing portion of the work table and having one yoke part of the wound iron core separated into the first and second yoke halves. Provided so as to be displaceable between a correction position where it is inserted between the two yoke halves and a retracted position where it is separated from between the first and second yoke halves. A straightening mold, a straightening mold drive mechanism for displacing the straightening mold between the straightening position and the retracted position, the side of the first yoke half of the wound core and the second joint The first and second orthodontic presser molds arranged on the sides of the iron half and the first and second orthodontic presser molds are directed toward the first and second yoke halves, respectively. First and second correction presser mold drive mechanisms to be displaced, and the first and second correction masks in a state where the correction mold is inserted between the first and second yoke halves. The presser mold is brought into contact with the first and second yoke halves from the outside, and the first and second yoke halves are brought into contact with the first and second presser molds for correction. A yoke half correction device that corrects the bending of the first and second yoke halves by pressing to the side.
[0027]
(F) An iron core holding base disposed further forward than the fixing block of the transformer positioning fixing portion of the work table.
[0028]
(G) Displacement of the wound iron core toward the iron core holding base while holding the other yoke part of the wound iron core whose bending of the first and second yoke half parts has been corrected by the yoke half correcting device An iron core pulling drive mechanism for pulling out the coil abutted against the fixed block and moving it onto the iron core holding base.
[0029]
In addition to the above components, the wound iron core disassembling apparatus according to the present invention preferably further includes the following elements.
[0030]
(H) A wound core disassembling apparatus for disassembling the wound core by sequentially peeling and carrying out the steel strip constituting the wound core moved on the wound core holding table from the outer peripheral side of the wound core. The wound core disassembling apparatus includes a steel strip adsorbing device that adsorbs steel strips constituting the wound core held on the core holding table one by one from the outer peripheral side of the wound core, and the steel strip adsorbing device from the wound core. An adsorption device moving mechanism for moving in a separating direction, and a steel strip for transferring the steel strip adsorbed by the adsorption device and moved by the adsorption device moving mechanism in a direction to separate from the wound core held on the wound core holding table. And a transfer device.
[0031]
Preferably, the wound core disassembling apparatus is further provided with a magnetizing means for magnetizing the laminated end portions of the steel strips constituting the wound core held on the core holding base to the same polarity.
[0032]
The transformer dismantling device is preferably provided with an excitation device that applies vibration to the iron core holding table.
[0033]
As described above, if a magnetizing means for magnetizing the laminated end of the wound core to the same polarity and an excitation device for vibrating the core holding base are provided, the steel strips in the laminated state are separated from each other. Since the laminated state can be loosened, the wound core can be easily disassembled.
[0034]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 10 is an exploded perspective view showing an example of the structure of a transformer device using a wound iron core. In the figure, 1 is a wound iron core formed by winding and laminating silicon steel strips, 2 and 2 are a pair of coils fitted to the left and right legs of the wound iron core 1, and each coil 2 is a primary coil ( High voltage coil) 2a and secondary coil (low voltage coil) 2b.
[0035]
The wound core 1 is made of a laminate of steel strips, and has a pair of leg portions 1a and 1b and a pair of yoke portions 1c and 1d that connect one end side and the other end side of both leg portions, respectively, A joint (not shown) for joining both ends of each steel strip is provided in the yoke part 1c. In FIG. 10, 3 and 4 are upper and lower yoke fasteners for fastening the upper and lower yoke portions of the iron core 1, respectively, and 5 are outer peripheries of the left and right legs of the wound iron core 1. It is a band for tightening the upper yoke fastening metal fitting 3 and the lower yoke fastening metal fitting 4 in a direction to draw each other through the coil 2.
[0036]
6 is a terminal plate attached to the upper yoke fastening bracket 3, 7 is an insulating plate inserted between the upper yoke fastening bracket 3 and the laminated surface of the upper yoke portion of the wound core, and 8 is a lower yoke fastening. An insulating plate inserted between the metal fitting 4 and the laminated surface of the lower yoke portion of the wound core, 9 is an insulating plate inserted between the yoke portion of the wound core and the end surface of the coil, and 10 and 11 are respectively An insulating plate 12 is inserted between the outer periphery of the upper yoke portion of the wound core and the upper yoke fastening bracket 3 and between the outer periphery of the lower yoke portion and the lower yoke fastening bracket 4, and 12 is an outer periphery of the coil and is shown in the figure. The insulating plates 7 to 12 are made of a press board or the like. The transformer device shown in FIG. 10 is accommodated in a transformer tank together with insulating oil.
[0037]
The disassembling method according to the present invention is a method for disassembling a wound core transformer TR composed of a wound core 1 and a pair of coils 2 and 2 when recycling the transformer as shown in FIG. Hereinafter, a disassembly method according to the present invention will be described with reference to FIGS. 1 to 9 together with a configuration example of a disassembly apparatus used for carrying out the disassembly method.
[0038]
FIG. 1 is a perspective view showing a configuration example of a main part of a disassembly apparatus according to the present invention, and FIGS. 2 to 9 are perspective views of main parts for explaining the operation of the disassembly apparatus.
[0039]
The winding core transformer dismantling apparatus shown in FIG. 1 separates the winding core transformer TR as shown in FIG. 10 into the winding core 1 and the coils 2 and 2, and then disassembles the winding core into individual steel strips. It is configured to perform up to work.
[0040]
In FIG. 1, reference numeral 15 denotes a work table extending in one direction, and a transformer positioning fixing portion 15 </ b> A is provided on one end side of the work table 15. As shown in FIG. 2, the transformer positioning and fixing portion includes a transformer holding surface 15a for holding the wound core transformer TR to be disassembled in a state where the laminated surface 1A of the wound core 1 is substantially horizontal, It arrange | positions so that the other yoke part 1d of the wound core 1 of the transformer TR hold | maintained on the transformer holding surface may be located in the direction orthogonal to the axial direction of a pair of coils 2 and 2 in between. A pair of fixed blocks 16, 16 are provided.
[0041]
Reference numeral 17 denotes a transformer supply device that supplies a wound core transformer TR to be disassembled to one end side of the work table 15, and this transformer supply device includes, for example, a roller conveyor. A transformer positioning plate 17A for positioning the transformer by abutting the coil of the transformer TR is provided at the terminal portion on the work table side of the transformer supply device 17.
[0042]
The wound core transformer TR to be disassembled has one yoke part 1c of the wound core 1 positioned on the opposite side of the work table 15 and the legs 1a, 1b of the wound core in the longitudinal direction of the work table 15. In this state, it is supplied to one end of the work table 15. When one coil 2 of the wound core transformer TR comes into contact with the positioning plate 17A, the supply device 17 is stopped and the transformer is positioned.
[0043]
A transformer positioning device 18 includes a fluid pressure cylinder 19 using oil or air as a working fluid, and a transformer holding metal fitting 20 attached to the tip of the piston rod 19a of the fluid pressure cylinder 19. The transformer holding metal fitting 20 has a U-shaped cross section, and as shown in FIG. 2, the winding core 1 of the transformer TR positioned by the positioning plate 17A is located inside the recess 20a. It is comprised so that this transformer TR can be hold | maintained in the state which fitted one yoke part 1c.
[0044]
The transformer positioning device 18 supplies one yoke portion 1c of the wound core transformer TR, which is supplied to one end side of the work table 15 by the transformer supply device 17 and positioned in contact with the positioning plate 17A, to the transformer holding bracket. In a state where the transformer is held by being fitted inside the concave portion 20a of the 20, the wound core transformer TR is advanced toward the fixed blocks 16, 16 by extending the piston rod of the fluid pressure cylinder 19. Thus, as shown in FIG. 2, the other yoke portion 1d of the wound core 1 of the transformer TR is inserted between the pair of fixed blocks 16, 16, and the ends of the pair of coils 2, 2 are paired. Then, the transformer TR is positioned and fixed to the transformer positioning and fixing portion 15A. After positioning and fixing the transformer TR, the piston rod of the fluid pressure cylinder 19 is retracted, and the transformer holding metal fitting 20 is retracted from the transformer TR.
[0045]
Reference numeral 21 denotes a wound iron core joint separating device disposed in the vicinity of the transformer positioning and fixing portion 15A. This separating device 21 is a column whose lower end is fixed to the work table 15 as shown in FIG. 22a and a fixed frame 22 that is bent from the upper end of the support 22a and extends horizontally above the transformer TR in the horizontal direction, and coils 2 and 2 of the transformer TR that are positioned and fixed to the transformer positioning and fixing portion 15A. The fluid pressure cylinder 23 is attached to the fixed frame 22 with the piston rod 23a facing downward and the axis line oriented vertically, and the piston rod of the fluid pressure cylinder 23 It consists of a wedge 24 attached to the lower end of 23a.
[0046]
As shown in FIG. 3, the fluid pressure cylinder 23 is disposed so that the axis of the piston rod 23a passes between the coils 2 and 2 of the transformer TR positioned and fixed to the transformer positioning fixing portion 15A. The wedge 24 is attached to the lower end of the piston rod 23a in a state where the thickness direction is directed to the opposing direction of the pair of coils 2 and 2. The wedge 24 is driven by the fluid pressure cylinder 23 to set a first position (position shown in FIG. 1) above the pair of coils 2 and 2 of the transformer TR and the pair of coils 2 and 2. Between the second position (the position shown in FIG. 3) that is inserted between the first position and the second position. In this example, the fluid pressure cylinder 23 constitutes a wedge drive mechanism that displaces the wedge 24 between the first position and the second position.
[0047]
As shown in FIG. 3, when the wedge 24 is displaced to the second position and inserted between the pair of coils 2 and 2, the pair of coils 2 and 2 are moved away from each other. One yoke part 1c of the wound core 1 is cut off at the joint, and the one yoke part 1c is separated into a first yoke half 1c1 and a second yoke half 1c2. It is done.
[0048]
25 is a yoke half correction device arranged on the transformer positioning and fixing portion 15A, and this correction device is provided so as to be able to displace vertically through the transformer positioning and fixing portion 15A of the work table 15. Straightening die 26, straightening die drive mechanism 27 for driving the straightening die in the vertical direction, first and second straightening die 28 and 29, and first and second straightening It comprises first and second correction presser mold drive mechanisms 30 and 31 for driving the presser molds 28 and 29 in the horizontal direction, respectively.
[0049]
More specifically, the correction die 26 is movable in the vertical direction to a position corresponding to one yoke portion 1c of the wound core 1 of the transformer TR positioned and fixed to the transformer positioning fixing portion 15A. It is provided and is connected to the upper end of the piston rod 32a of the fluid pressure cylinder 32 that is disposed below the work table 15 and fixed to a frame (not shown). The straightening die 26 is driven by a cylinder 32, and a wound core transformer TR in which one yoke part 1c of the wound core 1 is separated into first and second yoke halves 1c1 and 1c2. Of the first and second yoke halves 1c1, 1c2 and the corrective position (position shown in FIG. 5), and the first and second yoke halves 1c1, 1c2. It is displaced in the vertical direction between the retracted position where it is in a state of being separated downward from the space. In this example, a correction mold drive mechanism 27 is configured to displace the correction mold 26 between the correction position and the retracted position by the fluid pressure cylinder 32.
[0050]
As shown in FIGS. 6 and 7, the correction die 26 includes a prismatic main body portion 26a having a width dimension substantially equal to the interval between the leg portions 1a and 1b of the wound core 1, and the main body portion 26a. A wedge-shaped portion 26b formed at the upper end is integrally provided. The wedge-shaped portion 26b has an inclined surface 26b1 formed so as to extend obliquely upward from the upper end of the side surface 26a1 on one end side in the longitudinal direction of the main body portion 26a toward the other side surface 26a2, and in the width direction of the main body portion 26a. Inclined surfaces 26b2 and 26b3 which are inclined obliquely upward from the respective upper ends of the opposite side surfaces 26a3 and 26a4 and are brought closer to each other toward the one end side in the longitudinal direction of the main body portion 26a are provided.
[0051]
The inclined surfaces 26b1 to 26b3 are provided so as to meet one point above the side surface 26a1 on one end side in the longitudinal direction of the main body portion 26a. The correction die 26 is disposed in a state where the side surface 26a2 on the other end side in the longitudinal direction is directed to the other yoke portion 1d side of the wound core 1.
[0052]
After one yoke part 1c of the wound core 1 is separated into the first yoke half 1c1 and the second yoke half 1c2 by the wound core joining part separating device 21, the correction die 26 is It is driven by the fluid pressure cylinder 32 and displaced upward. When the straightening mold 26 is displaced upward, first, the inclined halves 26b1 of the straightening mold 26 come into contact with the yoke halves 1c1 and 1c2 in a curved state from the inside to bring both the yoke halves outward. Displace. Next, the inclined surfaces 26b2 and 26b3 of the straightening mold 26 are engaged between the yoke halves 1c1 and 1c2, and both yoke halves are opened to the outside. Finally, as shown in FIG. The body 26a of the mold 26 is interposed between the yoke halves 1c1 and 1c2 (1c2 is not shown in FIG. 7), and the yoke halves 1c1 and 1c2 are extended.
[0053]
The first and second correction presser dies 28 and 29 are formed in a plate shape, and the side of the first yoke half 1c1 and the side of the second yoke half 1c2 of the wound core 1. Respectively. The first and second correction presser dies 28 and 29 are respectively attached to the tips of piston rods 35a and 36a of fluid pressure cylinders 35 and 36 attached to support plates 33 and 34 fixed to the work table 15. The fluid pressure cylinders 35 and 36 are respectively driven to be displaced toward the first and second yoke halves 1c1 and 1c2. In this example, fluid pressure cylinders 35 and 36 constitute first and second correction presser mold drive mechanisms 30 and 31, respectively.
[0054]
The first and second correction presser molds 28 and 29 are formed in a hydraulic cylinder after the correction mold 26 is inserted between the first and second yoke halves 1c1 and 1c2 of the wound iron core. Driven by 35 and 36, the first and second yoke halves 1c1 and 1c2 are moved. The first and second correction presser dies 28 and 29 are brought into contact with the first and second yoke halves 1c1 and 1c2 with a predetermined pressure by the urging force of the fluid pressure cylinders 35 and 36. The first and second yoke halves 1c1 and 1c2 are pressed against the correction mold 26 by the presser dies 28 and 29, and the first and second yoke halves 1c1 and 1c2 are bent. Almost corrected.
[0055]
A groove 15b that extends linearly toward the other end side of the work table 15 is provided in a portion of the work table 15 that is positioned in front of the transformer positioning and fixing portion 15A. A pair of iron core holding tables 38 and 38 facing each other with the groove 15b therebetween is also provided at a position ahead of the transformer positioning and fixing portion 15A of the work table 15. The iron core holding bases 38 and 38 are provided in a state where their upper surfaces are located on the same plane, and the wound iron core 1 can be held horizontally on the upper surfaces of both iron core holding bases 38 and 38.
[0056]
In the illustrated dismantling apparatus, a movable frame 40 that reciprocates in the groove 15b of the work table is also provided. The movable frame 40 includes a movable block 40a that is guided by a guide mechanism (not shown) and travels in the groove 15b, an upright portion 40b that stands up from the movable block and protrudes vertically upward from the upper surface of the work table 15, and the upright portion. The arm 40c extends horizontally from the upper end of 40b to one end of the work table 15, and a fluid pressure cylinder 41 is attached to the tip of the arm 40c with its piston rod facing vertically downward. . A pin 42 is attached to the lower end of the piston rod of the fluid pressure cylinder 41, and between the other yoke part 1d of the wound core 1 of the transformer fixed to the transformer positioning fixing part 15A and the coils 2 and 2. By lowering the piston rod of the fluid pressure cylinder 41 with the pin 42 positioned above the gap, the pin 42 is inserted inside the other yoke portion 1d of the wound core to hold the wound core 1 Can be done.
[0057]
A fluid pressure cylinder 43 is fixed to the other end side of the work table 15 with its axis line oriented in the horizontal direction, and a piston rod 43 a of the fluid pressure cylinder 43 is connected to the movable frame 40.
[0058]
In the illustrated example, the fluid pressure cylinder 41 and the pin 42 constitute a yoke holding device that holds the other yoke portion of the wound core. The yoke holding device, the movable frame 40, and the fluid pressure cylinder 43 include the yoke holding device. Displacing the wound iron core toward the iron core holding stand 38 in a state where the other yoke part of the wound iron core whose bending of the first and second yoke half parts is corrected by the yoke half correcting device is held. Thus, an iron core pulling drive mechanism 45 is constituted which is pulled out from the coils 2 and 2 in contact with the fixed blocks 16 and 16 and moved onto the iron core holding bases 38 and 38.
[0059]
An exciter (not shown) is coupled to the iron core holding bases 38, 38, and vibrations are applied to the iron core holding bases 38, 38 by the exciters.
[0060]
A coil discharge fluid pressure cylinder 50 is disposed near the transformer positioning and fixing portion 15 </ b> A of the work table 15, and a coil discharge plate 51 is attached to the tip of the piston rod 50 a of the cylinder 50. The coil discharge plate 51 is disposed at a position corresponding to the coils 2 and 2 of the transformer positioned in the transformer positioning and fixing portion, and after the wound core 1 is pulled out from the coils 2 and 2, the fluid pressure cylinder 50. Is driven, and the coil discharge plate 51 is moved forward toward the coils 2 and 2 remaining on the work table. The coils 2 and 2 are pushed by the coil discharge plate 51 and are collected in a coil collection case 52 provided on the side of the work table 15.
[0061]
One iron core holding base 38 is attached with a pillar (not shown) extending in the vertical direction, and the first and second movable arms 61 and 62 are rotatably supported on the pillar by shifting the position vertically. Has been. Each of the first movable arm 61 and the second movable arm 62 is supported at its rear end by a support column, and a fluid pressure cylinder 63 is disposed at the tip of the first movable arm 61 disposed above. It is attached with the rod facing downward. A floater (product name) 64 is attached to the lower end of the piston rod of the fluid pressure cylinder 63 so as to face the laminated surface of the yoke half 1c2 of one yoke portion 1c of the wound core 1 disposed on the iron core holding base 38. It has been. Further, a floater 65 is arranged at a position facing the floater 64 of the iron core holding table 38, and the yoke half 1 c 2 of one yoke part of the wound core 1 held on the iron core holding table 38 is on the floater 65. It is designed to ride.
[0062]
The floaters 64 and 65 have a structure in which a magnet is accommodated in a flat case. When the floaters 64 and 65 are opposed to the ferromagnetic material, the ferromagnetic material is magnetized to the same polarity. Therefore, when the piston rod of the fluid pressure cylinder 63 is lowered so that the floater 64 faces the laminated surface of the yoke half 1c2 of the wound core, the width of the steel strip constituting the yoke half 1c2 of the wound core 1 is increased. Since the end portions in the direction are magnetized to the same polarity, a repulsive force acts between the steel strips laminated at the yoke half 1c2, and the steel strips are easily separated. Further, since the wound iron core on the iron core holding table 38 is vibrated from the iron core holding table, the steel strip constituting the wound iron core is more easily separated.
[0063]
A steel strip adsorbing device 66 is attached to the tip of the second movable arm 62 supported by a support fixed to the iron core holder 38 so as to adsorb the steel strip constituting the wound core using vacuum. The second movable arm 62 is connected to the piston rod of the fluid pressure cylinder 67 supported by the work table 15, and is driven by the fluid pressure cylinder 67 to approach the wound core 1 on the iron core holding table 38. And a direction away from the wound iron core.
[0064]
In the illustrated example, a suction device moving mechanism is constituted by the fluid pressure cylinder 67, and a steel strip constituting a wound iron core on the iron core holding table 38 is constituted by the moving mechanism, the second movable arm 62, and the steel strip suction device 66. A steel strip peeling mechanism is constructed in which the steel strips are sequentially adsorbed from the outer peripheral side of the wound iron core and peeled off from other laminated steel strips.
[0065]
A steel strip transfer device 68 that transfers the steel strip peeled off from the wound core 1 is disposed in the vicinity of the iron core holder 38. The illustrated steel strip transfer device 68 has a pair of guide beams 69 and 69 arranged in parallel with each other in an inclined state with respect to the longitudinal direction of the work table 15, and the shafts are supported by these guide beams 69 and 69. A first belt feeding device 71 having two drive belts 70 and 70 stretched over rollers, and rollers supported by guide beams 72 and 72 arranged in parallel with the guide beams 69 and 69. It comprises a second belt feeding device 74 constructed by suspending a belt 73. The second belt feeding device 74 is attached to a movable block 76 that is driven in the longitudinal direction of the work table 15 by a fluid pressure cylinder 75 fixed to the work table 15. The first belt feeding device 71 is displaced in a direction approaching the first belt feeding device 71 and a direction away from the first belt feeding device 71. The first belt feeding device 71 is provided with an electric motor (not shown) for driving the belts 70, and the second belt feeding device 74 is brought close to the first belt feeding device 71. When the steel strip is supplied between the belt feeding devices in the state where the steel strip is in the state, the steel strip is discharged in a direction away from the wound core 1.
[0066]
The second movable arm 62 is provided so as to enter between the two belts 70 when rotated to the first belt feeding device 71 side, and the piston rod of the fluid pressure cylinder 67 is The belt is connected to the second movable arm 62 through the belt 70.
[0067]
In the illustrated example, the steel strip constituting the wound core 1 moved onto the iron core holding bases 38 and 38 by the movable arm 62, the suction device 66, and the fluid pressure cylinder 67 is removed from the outer peripheral side of the wound iron core. A steel strip peeling device that sequentially peels off is constituted, and the peeling device and the discharging device 68 constitute a wound iron core disassembling device.
[0068]
In this wound core decomposition apparatus, the adsorption device 66 is driven by the fluid pressure cylinder 67 and is displaced toward the wound core 1 on the core holding table 38. Thereby, the adsorption device 66 is brought into contact with the steel strip on the outer peripheral side of the wound core 1, and the steel strip is adsorbed by the adsorption device 66. Next, the piston rod of the fluid pressure cylinder 67 is retracted, and the steel strip A adsorbed by the adsorbing device 66 is peeled off from the wound iron core 1 and brought into contact with the belts 70, 70 of the first belt feeding device 71. It is done. Next, the fluid pressure cylinder 75 is driven, the second belt feeding device 74 is moved toward the first belt feeding device 71 as shown in FIG. 9, and the belts 70 and 70 are driven. Thereby, the steel strip A peeled off from the wound core 1 is discharged in a direction away from the wound core 1 on the core holding base. By repeating these operations, the wound core 1 is disassembled into individual steel strips.
[0069]
In order to prevent the wound core from moving greatly when the wound core is disassembled, the core holding bases 38 and 38 are inserted inside the window portion of the wound core 1 and come into contact with the inner periphery of the wound core 1. Thus, iron core fixing plates 77 and 77 for fixing the wound iron core are attached. These iron core fixing plates 77 and 77 are provided so that they can be displaced up and down, and when the wound iron core 1 is moved onto the iron core holding bases 38 and 38, it does not protrude from the upper surface of the iron core holding base. In a state of being retracted downward, after the wound core 1 is moved onto the core holding bases 38, 38, it protrudes upward from the upper surfaces of the core holding bases 38, 38 and fixes the wound core.
[0070]
Hereinafter, a method for disassembling a wound core performed using the above dismantling apparatus will be described.
[0071]
First, the winding core transformer TR to be disassembled by the transformer supply device 17 with one yoke part 1c of the winding core 1 positioned on the side opposite to the work table 15 and the legs of the winding core 1 In a state where the parts 1a and 1b are oriented in the longitudinal direction of the work table 15, the one end of the work table 15 is supplied, and the coil of the transformer is applied to the positioning plate 17A provided at the terminal portion of the transformer supply device 17. The transformer TR is positioned in contact.
[0072]
Next, the fluid pressure cylinder 19 is driven to advance the transformer holder 20, and the yoke part 1 c of the wound iron core is fitted into the recess 20 a of the holder 20. In this state, the fluid pressure cylinder 19 is further driven to move the transformer TR onto the transformer positioning / fixing portion 15A of the work table 15 as shown in FIG. 2, and the yoke portion 1d of the wound core 1 is fixed to the fixed block. In addition, the transformers TR are positioned and fixed to the positioning fixing portion 15A by fitting the end portions of the coils 2 and 2 to the fixing blocks 16 and 16, respectively.
[0073]
Next, as shown in FIG. 3, a wedge 24 is inserted between the pair of coils 2 and 2 of the transformer TR and is displaced in a direction in which both coils are separated, whereby one yoke portion 1c of the wound core 1 is joined. Then, a step of separating the yoke portion is performed in which the one yoke portion is separated into a first yoke half 1c1 and a second yoke half 1c2.
[0074]
Next, after retracting the wedge 24 upward, as shown in FIG. 4, the movable frame 40 is moved to the transformer positioning and fixing portion 15 </ b> A side, the fluid pressure cylinder 41 is driven, and the pin 42 is moved to the winding core 1. The yoke part 1d of the wound core 1 is held by being inserted inside the yoke part 1d.
[0075]
Next, as shown in FIGS. 6 and 7, the fluid pressure cylinder 32 is driven to move the correction die 26 upward, and the die 26 is connected to one of the winding cores 1 as shown in FIG. The operation of inserting between the first yoke half 1c1 and the second yoke half 1c2 constituting the iron part and the correction presser dies 28 and 29 to the yoke half 1c1 and 1c2, respectively. An operation of pressing the yoke halves against the correction mold 26 while abutting from the outside is performed to perform a yoke portion correcting process for correcting the bending of the yoke halves 1c1 and 1c2.
[0076]
After correcting the bending of the yoke halves 1c1 and 1c2, the fluid pressure cylinder 43 is driven to move the wound core 1 to the core holding base 38 side, whereby the wound core is pulled out from the coils 2 and 2 and the wound core. A coil core separation step for separating the coil and the coil is performed, and the wound core 1 is moved onto the iron core holding bases 38 and 38 as shown in FIG.
[0077]
Next, as shown in FIG. 8, the fluid pressure cylinder 63 is driven to bring the floater 64 into contact with the laminated surface of the yoke half 1 c 2 of the wound core 1, and the iron core holding bases 38 and 38 are vibrated. The stacking state of the receding stack constituting 1 is loosened. In this state, as shown in FIG. 8, the cylinder 67 is driven to displace the suction device 66 toward the outer periphery of the wound core 1, and the steel strip A on the outer periphery of the wound core is sucked by the suction device. After the steel strip on the outer periphery of the wound iron core is adsorbed by the adsorbing device 66, the piston rod of the cylinder 67 is retracted, and the adsorbed steel strip A is brought into contact with the belts 70, 70 of the belt feeding device 68. Next, the cylinder 75 is driven to advance the belt feeder 74, and the belt feeder 74 is brought close to the belt feeder 68 as shown in FIG. In this state, the belts 70, 70 of the steel strip transfer device 68 are driven to displace the steel strip A from the wound core 1 in a direction away from the wound core 1. By repeating these operations, the wound core 1 is disassembled into individual steel strips. The separated steel strip is sent to the next process (for example, a cutting process or a cleaning process) by a conveyor (not shown) arranged on the side of the work table 15.
[0078]
As described above, in the method for disassembling the transformer according to the present invention, the wedge 24 is inserted between the pair of coils 2 and 2 and is displaced in the direction in which both coils are separated from each other. A step of separating the iron part 1c at the joint and separating the one yoke part into a first yoke half 1c1 and a second yoke half 1c2, and one of the wound cores 1; The first and second yoke halves 1c1 and 1c2 constituting the yoke part 1c of the steel plate are respectively applied with molds 26, 28, and 29 to correct the bending of the respective yoke halves. The coil 2, 2 and the wound core 1 are displaced relative to each other in the axial direction of the coil by correcting the yoke part correcting step, and the coils 2, 2 and the wound core whose curvature of each yoke half is corrected. The coil iron core separating step to be separated, and the steel strip constituting the wound iron core 1 separated from the coil are arranged on the outer peripheral side of the wound iron core. Is performed and wound cores decomposition step of decomposing a wound core by unloaded by al sequentially separated and the dismantling of the wound core transformer can be mechanically performed. Therefore, since the transformer can be disassembled without touching the wound core transformer, the transformer can be used even when insulating oil containing harmful substances such as PCB is attached to the wound core transformer. Can be safely dismantled.
[0079]
In the above example, when the wound core was disassembled, the wound core was fixed, and the steel strip constituting the wound core was sequentially peeled off from the outer peripheral side. It is not restricted to said example, For example, a wound iron core may be decomposed | disassembled into each steel strip by rotating a wound iron core in the state which adsorb | sucked the steel strip of the outer peripheral side of a wound iron core.
[0080]
In the above example, a suction device using vacuum is used as the suction device for attracting the steel strip, but an electromagnet may be used as the suction device.
[0081]
If an electromagnet is used as an adsorption device, multiple steel strips may be adsorbed at one time. However, if an adsorption device using vacuum is used, the steel strips are adsorbed one by one. Therefore, the possibility of separating a plurality of steel strips when disassembling the wound core can be eliminated.
[0082]
【The invention's effect】
As described above, according to the present invention, by inserting a wedge between a pair of coils of a wound core transformer and displacing both coils in the direction of separating both coils, one yoke portion of the wound core is By separating the one yoke part into the first and second yoke halves, a mold is applied to each of the first and second yoke halves. The winding core and coil are relatively displaced in the axial direction of the coil with the iron half bent corrected, so that the coil and the winding core can be easily separated without touching the transformer. be able to.
[0083]
Thus, according to the present invention, since the transformer can be disassembled without touching the wound core transformer, insulating oil containing harmful substances such as PCB is attached to the wound core transformer. Even if it is, there exists an advantage which can dismantle this transformer safely.
[0084]
Further, in the present invention, when the steel strip constituting the wound core is separated sequentially from the outer peripheral side and the wound core is disassembled, each steel strip can be cleaned individually, There is an advantage that the attached insulating oil can be completely removed.
[0085]
Furthermore, in the dismantling apparatus for the wound core transformer according to the present invention, when the magnetizing means for magnetizing the laminated end portion of the wound core to the same polarity and the excitation device for vibrating the iron core holding base are laminated, Since the steel strips in the state can be separated from each other or the laminated state can be loosened, the wound core can be easily disassembled.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration example of a dismantling apparatus according to the present invention.
FIG. 2 is a perspective view of a main part showing a configuration example in the vicinity of a transformer positioning and fixing part of the disassembling apparatus according to the present invention.
FIG. 3 is a perspective view of a main part showing a state where a yoke part separating step is performed in the disassembling apparatus according to the present invention.
FIG. 4 is a perspective view of a main part showing a state in which a yoke part of a wound core is held by a holding device of an iron core pulling drive mechanism in a disassembling apparatus according to the present invention.
FIG. 5 is a perspective view of a main part showing a state when the bending of the yoke half of the wound iron core is corrected in the disassembling apparatus according to the present invention.
FIG. 6 is a perspective view of a main part showing a state when the correction mold is started to be inserted between the yoke halves of the wound core in the disassembling apparatus according to the present invention.
FIG. 7 is a perspective view of a main part showing a state in which a correction die is inserted between the yoke halves of the wound core in the disassembling apparatus according to the present invention.
FIG. 8 is a perspective view of a main part showing a state when the wound iron core is disassembled in the disassembling apparatus according to the present invention.
FIG. 9 is a perspective view of an essential part showing a state when a steel strip is separated and discharged from a wound iron core in the disassembling apparatus according to the present invention.
FIG. 10 is an exploded perspective view showing an example of a wound core transformer disassembled by the disassembly method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Winding iron core, 1c ... One yoke part, 1c1 ... 1st yoke half part, 1c2 ... 2nd yoke half part, 2 ... Coil, 15 ... Worktable, 15A ... Transformer positioning fixing part, DESCRIPTION OF SYMBOLS 17 ... Transformer supply apparatus, 18 ... Transformer positioning apparatus, 21 ... Winding iron core junction cutting apparatus, 24 ... Wedge, 25 ... Half yoke correction apparatus, 26 ... Correction mold, 27 ... Correction mold drive Mechanism, 28, 29 ... Pressing mold for correction, 30, 31 ... Mold drive mechanism, 38 ... Iron core holder, 66 ... Steel strip adsorption device, 68 ... Steel strip transfer device.

Claims (9)

It consists of a laminated body of steel strips, and has a pair of leg portions and a pair of yoke portions connecting one end side and the other end side of both leg portions, and joining both ends of each steel strip to one yoke portion In a method of disassembling a wound core transformer provided with a wound core provided with a joint portion to be paired and a pair of coils wound respectively on the legs of the pair of wound cores,
By inserting a wedge between the pair of coils and displacing the coils in a direction to separate them, the one yoke part of the wound core is cut off at the joint part and the one yoke part is separated from the first yoke part. A step of separating the yoke part to separate the iron half part and the second yoke half part;
A yoke that corrects the bending of each yoke half by applying a mold to each of the first yoke half and the second yoke half constituting one yoke portion of the wound core. Part correction process,
A coil core separation step for separating the coil and the wound core by relatively displacing the coil and the wound core in which the bending of each yoke half is corrected, in the axial direction of the coil;
A method for disassembling a wound core transformer characterized in that It consists of a laminated body of steel strips, and has a pair of leg portions and a pair of yoke portions connecting one end side and the other end side of both leg portions, and joining both ends of each steel strip to one yoke portion In a method of disassembling a wound core transformer provided with a wound core provided with a joint portion to be paired and a pair of coils wound respectively on the legs of the pair of wound cores,
By inserting a wedge between the pair of coils and displacing the coils in a direction to separate them, the one yoke part of the wound core is cut off at the joint part and the one yoke part is separated from the first yoke part. A step of separating the yoke part to separate the iron half part and the second yoke half part;
A yoke that corrects the bending of each yoke half by applying a mold to each of the first yoke half and the second yoke half constituting one yoke portion of the wound core. Part correction process,
A coil core separation step for separating the coil and the wound core by relatively displacing the coil and the wound core in which the bending of each yoke half is corrected, in the axial direction of the coil;
A wound core disassembling step of disassembling the wound core by sequentially separating and carrying out a steel strip constituting the wound core separated from the coil from the outer peripheral side of the wound core;
A method for disassembling a wound core transformer characterized in that The step of correcting the yoke part includes a process of inserting a correction die between the first and second yoke halves of the wound core, and the first and second yoke halves of the wound core. Bending of the first and second yoke halves by pressing the correction presser mold from the outside and pressing the first and second yoke halves against the correction mold with the presser mold The method for disassembling a wound core transformer according to claim 1 or 2, comprising the step of correcting the winding. In the wound core decomposition step, the steel strips constituting the wound core are adsorbed one by one and displaced in the direction of separating from the other steel strips in a stacked state, and the separated steel strips are separated. The method for disassembling a wound core transformer according to claim 2 or 3, wherein the method is performed by repeating a process of displacing the steel strip in a direction of being separated from other steel strips in a stacked state. It consists of a laminate of steel strips, and has a pair of leg portions and a pair of yoke portions connecting one end side and the other end side of both leg portions, and joining both ends of the laminate body to one yoke portion In a wound core transformer disassembling apparatus for disassembling a wound core transformer provided with a wound core provided with a joint portion to be paired and a pair of coils wound respectively on the legs of the pair of wound cores,
A transformer holding surface for holding the wound core transformer to be disassembled in a state where the laminated surface of the wound core is almost horizontal, and the other yoke portion of the wound core of the transformer held on the transformer holding surface A work table provided with a transformer positioning fixing part on one end side having a pair of fixing blocks arranged so as to be opposed to each other in a direction perpendicular to the axial direction of the pair of coils.
A transformer supply device for supplying a wound core transformer to be disassembled to one end side of the work table, and a wound core transformer supplied to the one end side of the work table by the transformer supply device is advanced to the fixed block side. The other yoke part of the wound core of the transformer is inserted between the pair of fixed blocks, and the ends of the pair of coils are brought into contact with the pair of fixed blocks to be disassembled. A transformer positioning device for positioning and fixing an iron core transformer to the transformer positioning fixing portion;
Between the first position set above the pair of coils of the transformer positioned and fixed to the transformer positioning fixing portion and the second position that is inserted between the pair of coils. A wedge provided so as to be displaceable, and a wedge drive mechanism for displacing the wedge between the first position and the second position, and displacing the wedge to the second position The one yoke part of the wound core of the transformer positioned and fixed to the positioning fixing part by being inserted between the pair of coils is separated at the joint part, and the one yoke part is separated from the first yoke part. A wound core core separation device that separates into an iron half and a second yoke half;
The first and second winding core transformers arranged in the transformer positioning and fixing portion of the work table and in which one yoke part of the winding core is separated into the first and second yoke halves. Provided so as to be displaceable between a correction position where it is inserted between the two yoke halves and a retracted position where it is separated from between the first and second yoke halves. A straightening mold, a straightening mold drive mechanism for displacing the straightening mold between the straightening position and the retracted position, a side and a second side of the first yoke half of the wound core The first and second straightening presser molds disposed on the sides of the yoke half and the first and second straightening presser molds are respectively connected to the first and second yoke halfs. First and second correction presser mold drive mechanisms that are displaced toward the part, and inserting the correction mold between the first and second yoke halves In this state, the first and second correction presser dies are brought into contact with the first and second yoke halves from the outside so that the first and second yoke halves are brought into contact with the first and second yoke halves. A yoke half correction device that corrects the bending of the first and second yoke halves by pressing against the correction mold side with the correction pressing mold of 2;
An iron core holding base disposed further forward than the fixing block of the transformer positioning fixing portion of the work table;
Displacing the wound iron core toward the iron core holding stand in a state where the other yoke portion of the wound iron core whose bending of the first and second yoke half has been corrected by the yoke half correcting device is held. An iron core pulling drive mechanism for pulling out from the coil abutted to the fixed block and moving it on the iron core holding table;
A wound iron core transformer dismantling device comprising: It consists of a laminate of steel strips, and has a pair of leg portions and a pair of yoke portions connecting one end side and the other end side of both leg portions, and joining both ends of the laminate body to one yoke portion In a wound core transformer disassembling apparatus for disassembling a wound core transformer provided with a wound core provided with a joint portion to be paired and a pair of coils wound respectively on the legs of the pair of wound cores,
A transformer holding surface for holding the wound core transformer to be disassembled in a state where the laminated surface of the wound core is almost horizontal, and the other yoke portion of the wound core of the transformer held on the transformer holding surface A work table provided with a transformer positioning fixing part on one end side having a pair of fixing blocks arranged so as to be opposed to each other in a direction perpendicular to the axial direction of the pair of coils.
A transformer supply device for supplying a wound core transformer to be disassembled to one end side of the work table, and a wound core transformer supplied to the one end side of the work table by the transformer supply device is advanced to the fixed block side. The other yoke part of the wound core of the transformer is inserted between the pair of fixed blocks, and the ends of the pair of coils are brought into contact with the pair of fixed blocks to be disassembled. A transformer positioning device for positioning and fixing an iron core transformer to the transformer positioning fixing portion;
Between the first position set above the pair of coils of the transformer positioned and fixed to the transformer positioning fixing portion and the second position that is inserted between the pair of coils. A wedge provided so as to be displaceable, and a wedge drive mechanism for displacing the wedge between the first position and the second position, and displacing the wedge to the second position The one yoke part of the wound core of the transformer positioned and fixed to the positioning fixing part by being inserted between the pair of coils is separated at the joint part, and the one yoke part is separated from the first yoke part. A wound core core separation device that separates into an iron half and a second yoke half;
The first and second winding core transformers arranged in the transformer positioning and fixing portion of the work table and in which one yoke part of the winding core is separated into the first and second yoke halves. Provided so as to be displaceable between a correction position where it is inserted between the two yoke halves and a retracted position where it is separated from between the first and second yoke halves. A straightening mold, a straightening mold drive mechanism for displacing the straightening mold between the straightening position and the retracted position, a side and a second side of the first yoke half of the wound core The first and second straightening presser molds disposed on the sides of the yoke half and the first and second straightening presser molds are respectively connected to the first and second yoke halfs. First and second correction presser mold drive mechanisms that are displaced toward the part, and inserting the correction mold between the first and second yoke halves In this state, the first and second correction presser dies are brought into contact with the first and second yoke halves from the outside so that the first and second yoke halves are brought into contact with the first and second yoke halves. A yoke half correction device that corrects the bending of the first and second yoke halves by pressing against the correction mold side with the correction pressing mold of 2;
An iron core holding base disposed further forward than the fixing block of the transformer positioning fixing portion of the work table;
Displacing the wound iron core toward the iron core holding stand in a state where the other yoke portion of the wound iron core whose bending of the first and second yoke half has been corrected by the yoke half correcting device is held. An iron core pulling drive mechanism for pulling out from the coil abutted to the fixed block and moving it on the iron core holding table;
A wound core disassembling device for disassembling the wound core by sequentially peeling and carrying out the steel strip constituting the wound core moved on the iron core holding base from the outer peripheral side of the wound core;
A wound iron core transformer dismantling device comprising: The wound core decomposing apparatus includes a steel strip adsorbing device that adsorbs steel strips constituting the wound core held on the iron core holding table one by one from the outer peripheral side of the wound core, and the steel strip adsorbing device. A suction device moving mechanism that moves in a direction away from the steel, and a steel that moves in a direction to separate the steel strip that is attracted by the suction device and moved by the suction device moving mechanism from the wound core held on the wound core holding table The wound iron core transformer dismantling apparatus of Claim 6 provided with a belt | band | zone transfer apparatus. The said wound iron core decomposition | disassembly apparatus is further equipped with the magnetizing means which magnetizes the lamination | stacking edge part of the steel strip which comprises the wound iron core hold | maintained on the said iron core holding stand to the same polarity. Or the wound core transformer dismantling device according to 7. The wound core transformer dismantling apparatus according to any one of claims 6 to 8, wherein an excitation device that applies vibration to the iron core holding table is provided.

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